. Author manuscript; available in PMC: 2012 Aug 22.

Published in final edited form as: Am J Physiol Endocrinol Metab. 2001 Feb;280(2):E323–E333. doi: 10.1152/ajpendo.2001.280.2.E323

Table 1.

Plasma and muscle intracellular free glutamine and phenylalanine enrichment during the last 30 min in the basal period and during ingestion of the amino acid mixture that included glutamine alone (amino acids) and with additional glucose (amino acids plus glucose)

	Basal	Amino Acids	Basal	Amino Acids Plus Glucose
[¹⁵N₁]glutamine
Femoral artery	0.066±0.005	0.047±0.003^*	0.072±0.006	0.056±0.004^*
Femoral vein	0.052±0.003	0.037±0.003^*	0.054±0.005	0.045±0.004^*
Muscle	0.016±0.002	0.021±0.002^*	0.020±0.005	0.033±0.003^*
Muscle-to-artery ratio	0.24±0.04	0.45±0.06^*	0.28±0.07	0.59±0.04^*
[¹³C₂]glutamine
Femoral artery		0.032±0.003		0.026±0.003
[ring-²H₅]phenylalanine
Femoral artery	0.069±0.006	0.039±0.003^*	0.078±0.003	0.047±0.003^*
Femoral vein	0.054±0.003	0.034±0.003^*	0.059±0.004	0.043±0.003^*
Muscle	0.039±0.006	0.030±0.003^*	0.037±0.005	0.037±0.004
[ring-¹³C₆]phenylalanine
Femoral artery		0.047±0.005		0.058±0.002

Data are expressed as means ± SE.

Significantly different from basal (P < 0.05).